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Ternary Cu-Co-P (copper-cobalt-phosphor) nanorod as well as preparation method and application thereof

A cu-co-p, nanorod technology, applied in chemical instruments and methods, electrodes, electrolysis process, etc., to achieve the effect of simple preparation process and low cost

Inactive Publication Date: 2018-07-27
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problem that the transition metal phosphides used as non-noble metal catalysts for electrolyzed water hydrogen production in the prior art can only be applied to the electrolyte environment with a narrow pH value, the present invention provides a ternary Cu-Co- P nanorods and their preparation methods and applications not only have higher electrolytic water catalytic activity than existing transition metal phosphides in electrolyte environments with various pH values, but also are fast and efficient, low in cost, simple in preparation process, and environmentally friendly. No pollution, suitable for large-scale industrial production

Method used

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  • Ternary Cu-Co-P (copper-cobalt-phosphor) nanorod as well as preparation method and application thereof
  • Ternary Cu-Co-P (copper-cobalt-phosphor) nanorod as well as preparation method and application thereof
  • Ternary Cu-Co-P (copper-cobalt-phosphor) nanorod as well as preparation method and application thereof

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preparation example Construction

[0026] A preparation method of ternary Cu-Co-P nanorods, comprising the steps of:

[0027] Step A, mixing copper nitrate, cobalt nitrate, urea, and ammonium fluoride together in water, making the concentration of copper nitrate in the mixed solution be 0.2 to 1.0 mmol / liter, and the concentration of cobalt nitrate to be 5.0 to 6.0 mmol / liter, The concentration of urea is 15.0-25.0 mmol / L, and the concentration of ammonium fluoride is 6.0-10.0 mmol / L, so as to prepare the precursor mixed solution.

[0028] Step B, placing the substrate in the precursor mixed solution, and transferring the substrate and the precursor mixed solution into an autoclave, and then reacting at 100-120° C. for 480-600 minutes, so that the CuCo-LDH nanorods were prepared on the above substrate.

[0029] Step C, drying the substrate and the CuCo-LDH nanorods on the substrate, and then according to the mass ratio of the precursor mixed solution: sodium hypophosphite = 1:20, the dried substrate together w...

Embodiment 1

[0039] A preparation method of ternary Cu-Co-P nanorods, comprising the steps of:

[0040] Step a, copper nitrate, cobalt nitrate, urea, ammonium fluoride are mixed together in water, make the concentration of copper nitrate in the solution after mixing be 0.6 mmol / liter, cobalt nitrate concentration be 6.0 mmol / liter, urea concentration be 20.0 mmol / L, the ammonium fluoride concentration is 8.0 mmol / L, thereby preparing the precursor mixed solution.

[0041] Step b, using carbon cloth (CC) with a size of 1×4cm as the substrate, placing the substrate in the precursor mixed solution, and transferring the substrate and the precursor mixed solution to a 50mL autoclave , and then reacted at 110°C for 480 minutes to prepare CuCo-LDH nanorods on the substrate.

[0042] Step c, drying the substrate and the CuCo-LDH nanorods on the substrate, and then according to the mass ratio of the precursor mixed solution: sodium hypophosphite = 1:20, the dried substrate together with the CuCo-L...

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Abstract

The invention discloses a ternary Cu-Co-P (copper-cobalt-phosphor) nanorod as well as a preparation method and application thereof. The preparation method comprises the following steps of mixing copper nitrate, cobalt nitrate, urea and ammonia fluoride in water, so as to prepare a precursor mixed solution; placing a substrate into the precursor mixed solution, reacting for 480 to 600min in a high-pressure kettle at the temperature of 100 to 120 DEG C, and preparing a CuCo-LDH (hydrotalcite) nanorod on the substrate; placing the dried substrate and the CuCo-LDH nanorod into a ceramic boat withsodium hypophosphite; transferring into a tubular furnace, and heating for 0.5 to 2h at the temperature of 300 to 350 DEG C, so as to obtain the ternary Cu-Co-P nanorod. The ternary Cu-Co-P nanorod can be directly used as a working electrode for electrochemically decomposing water. The ternary Cu-Co-P nanorod has the advantages that compared with the existing transition metal phosphide, the waterhydrolyzing catalyzing cavity is higher in the pH (potential of hydrogen) electrolytes; the cost is low, the preparation technology is simple, the environment-friendly and non-pollution effects are realized, and the ternary Cu-Co-P nanorod is suitable for large-scale industrialized production.

Description

technical field [0001] The invention relates to the field of transition metal phosphide nanomaterials, in particular to a ternary Cu-Co-P nanorod and its preparation method and application. Background technique [0002] Fossil fuels are non-renewable resources with limited reserves, and excessive use will cause air pollution and exacerbate global warming. Therefore, it is urgent to find clean and sustainable energy that can replace fossil fuels. Wind energy, solar energy, tidal energy, geothermal energy, and biomass energy are all new energy sources that can replace fossil fuels, but these energy sources are greatly affected by elements such as regions and weather, and their stability is not high. Due to its high content and wide distribution, hydrogen energy is considered to be the main energy source for human beings instead of fossil fuels. At present, the main ways to produce hydrogen in industry are: steam reforming of methane, coal gasification and electrolysis of wate...

Claims

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Application Information

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IPC IPC(8): B01J27/185C25B1/04C25B11/04C25B11/12
CPCC25B1/04C25B11/04B01J27/1853C25B11/043B01J35/40B01J35/33Y02E60/36
Inventor 李越温路路孙一强蔡伟平
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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